Antithesis
Diction
100

It was the best of times, it was the worst of times

Yes, it has two opposites next to each other and the sentence is parallel. 

100

The puppy happily bounded across the grassy field.

Yes, the words chosen add an energetic and happy feeling. 

200

Ask not what your country can do for you—ask what you can do for your country.

Yes, the grammar of the two parts match and the subject and object flip, showing opposing ideas.

200

He slammed the door and stormed down the hallway.

Yes, the words chosen strongly communicate anger.

300

There was a deafening silence in the room. 

No, "deafening silence" is a two word phrase while antithesis compares two broader ideas across a sentence.

300

The rain fell from the sky.

No, the words are straightforward and literal to their meaning. 

400

I hate waking up early, but watching the sunrise is beautiful.

No, while it does compare two contrasting feelings, the grammar flow changes and doesn't mirror each other. 

400

The child ate his dinner quickly.

No, the words just show a basic action and not any other mood.

500

You either die a hero, or live long enough to see yourself become the villain. 

Yes, it has good gramatical balance and compares being a hero to being a villain.

500

The soldier trudged through the muddy battlefield.

Yes, the word "trudged" shows exhaustion and adds to a more serious tone.